schuster



Sept. 2, 1924. 1,507,253

E. SCH USTER GALCULTING MACHINE Homey Sept. 2 1924. 1,507,253

E. SCHUSTER GALCULATING MACHINE Filed May 20, 1924 5 Sheets-Sheet 2 fn ven for SCZaSZ'S/f A 'orney E. SCHUSTER CALCULATING MACHINE Filed may 2o, 1924 5 Sheets-Sheet' 5 sept. z 1924. 1,507,253

l E'. SCHUSTER CALCULATING- MACHINE Filed ay 2O 1924 5 Sheets-Sheet 4 sept. 2 1924.. 1,507,253

f E. SCHUSTER l CALGULATING MACHINE Filed May 2O 1924 5 Sheets-Sheet 5 -MM mix;

Jforney Patented Sept. 2, 1924.

Pari-:Nr orifice.

ERNST SCHIISTER, F IB-EBLIN', GERMANY'.

caLcLame lm cnmn Application ma my 2o, ma serian no. 714,729.

i To all 'whom z't may concern:

Be it known that I, ERNST SoHUs'rER, a citizen of the German Republic, and resident of Berlin,Germany, have'inven'ted certain new and useful Improvements in Calculatin Machines, of which the following isv 'a speci cation.

My invention rela-tes to a calculating machine having driving-wheels, the number of the teeth of which 1s ad]ustable,as well as two counting mechanisms which are completely vindependent from one another and are driven by an' adjusting mechanism which is common to them both.

The gist of the invention resides therein that one of the two counting mechanisms which is driven by the indicating mechav ni'sm independent of the other counting l mechanism is actuated bythe intermediary of a reversing gear, the reversal of which is effected by the rotation of a guide-member in such a manner that the axles of the intermediate wheels are shifted in opposite directions, in order to reverse the direction of revolution of the second counting mecha- It is rendered possible in this way, and in the simplest manner, to'actuatethe second countin mechanism in the same direction as the rst counting mechanism, or counter thereto, so that it is rendered possible to perform composite o r compounded calculationsl My invention is illustrated by way of examp e in the accompanying drawings Vin wh1ch`Fi ure 1 is afront-view of the improved ca culating machine; Fi re 2 is a plan, the, casing being removed; i a side-'view of the machine, seen rom the righthand side; Figure-4 is a vertical crosssection through the righthand partof the smacliine" whlch contains the indicating.

mechanisms ;i Figures 5 and 6 show each a sectionin the plane 5*?) of Fig. 4, the cogwheels being shown in their position for positive calculation (Fig. 5), as well as for negative calculation (Fig. 6); Figure 7 shows the same parts or wheels, in connection with parts ofone of the twovcounting 6. These walls are covered .with a side-walls 4 and 5 and of a partition wall plate 7 havmg a set of vertical slots 7Ywh1ch are crossed by lines denoted by the numerals 0, 1, 2, 7, 8, 9, Lefthand therefrom a longitudinal slot 8 (Fig. 1) is provided in the top plate of the casing. The'shaft 9 is supported in known manner in the wall 5 and provided with the driving crank 10. At the inner end of this shaft, within the casin a cog-wheel 11 is secured thereto and mes es with a cog-wheel12 aiixed to a shaft 15 supported between the walls 5 and- 6 and carrymg the adjusting disks '14 which are firmly attached thereto. Eachf of these disks is provided with a lug 15 which projects through the slots 7 appertaining to the respective disk..

. The slide 2 consists of two side-walls 26 and 27 and of a partition wall 28. Between these 'walls` a' shaft 29 is supportedand carries the,disks 30 for or o one ofthe indicating mechanisms, the disks being shoved upon said shaft. They areconnected in known manner with cog-wheels 31 meshing with cog-wheelsl 33 carried by a shaft 32.

ranged tens-transmitting levers 35carried by the shaft 34. p v

Below the .shaft -32 is a `shaft 36 which carries co -wheels'37 which can also mesh with the a justable teeth of the disks 14.

In the front part of the slide there is supported a shaft 38 between the walls 27 and 28, and the disks 39 of the second indicating mechanism are shoved u on, and carrie by, this shaft. Also these isks are connected with cog-'wheels 40. Behind the shaft 38 there is located a shaft '41 carryingxcogwheels 42 which mesh with the cog-wheels 40, and between the shafts 36 and 41 there is sup orted a shaft 43 carrying cog-wheels 44. lie breadth of these cog-wheels is double that of the breadtheof the cog-wheels 37 and 42. The cog-wheels 44 can mesh with the cog-wheels 37, as well as with the y.cogwheels 42. Below thehafts 41 and 43 1s arranged a shaft 45 carrying cog-wheels 46, the breadth of which is the same as that of the cog-wheels v44 and which are supported in such a way that they can mesh with the cog-wheels 42, as well as with the cogwheels 44.

Bell-crank levers 48 are supported on a 'shaft 47 and so arranged that the free end of each lever lies in front of the .tens-transmission levers 50 intendedfor the second indicating mechanism and supported on the shaft 49. The tens-pins 51 affixed to the .disks 39 act on the bell-crank levers 48 and,

cause in this (known) way the transfer of the tens. The two shafts 43 which carry the cog-wheels 44 and45 are shiftable and 104 their ends project through the wall5, as well as through the partition wall 6.

At the wall 5 is supported a shaft 52 provided with handle 53; it can be rotated, fas well as shifted axially. A spring 54 located behind this shaft presses it forward.

The shaft 52 is so arranged that it lies bei tween the ends of the' shafts 43 and 45. In the vheight of these shafts a member 55 lis aflixed `to the shaft 52, and said member is provided with guide-ways 56' extending obliquely withrespect to the axial direction of'this shaft. These guide-ways extend parallelly to each other obliquely outwards and forwards, land terminate'at notches provided in the shafts 43and 45. When the handle 53 is turned to the left, the upper shaft 43 is shifted outof the casing, Whereas the :lower shaft 45 is pressed inwards. If

the handle is turned in opposite direction, the upper shaft 43 is pressed inwards and the lower shaft 45 is drawn outwards.

the shaft 52 is shoved rearwards axially, both shafts are shoved outwards by the oblique guide-ways 56.

In order to check the shaft 52 in its `several positions, an elastic pin 57 provided with a knob 58 is provided at the casing Wall; the free end of this pin is wedgeshaped. On theshaft 52 a wedge-shaped 60 member 59 is provided below said in. Ac-

cording to the position of the han le 53 the wedge-shaped' pin 57 contacts with one or the -other side of the member 59. -If the' shaft is turned rearwards counter to the pressure of the spring 54, said pin gets tol lie in front of the member 59 and prevents thereby rotation of said shaft in opposite direction. The checking can' be released by the knob -of the sha-ft 58, and when the pin 57 is lifted, the shaft 52 is turned back into its former position by the spring 54. Between the walls 26 and 25 a shaft 60 I is supported; this shaft carries the indicating disks 61 of the counting mechanism,

and these ydisks carry cog-wheels 62 which the wall 28 which is directed towardsthe counting mechanism a tooth 69 is provided which is in connection with the shaft 29 and. is moved when the handle 67 is turned in that direction in which the re-setting to zero is to be effected. In extensions of the shaft 38v a shaft 70` is supported between the walls 26 and-28, and indicating disks vis arranged which carries a cog-wheel 74 meshing with that cog-wheel which is connected with the unit-disk of the indicating mechanism 71, and in the height of the disks next following tens-teeth 75 are provided.

Over the shaft 70 a shaft 76 is located on which is arranged shiftably a cog-wheel 78 provided with a guide-sleeve 77. This cogwheel meshes with the cog-wheel 74' and can get also into the path of the cogwheel 69. l

At the wall 28 an arm 8O is attached at the point 792 (Fig. 9); at the upper Aend of this arm a pin 81 is provided which extends into the guide-sleeve 77. Besides, a member 82 is attached revolubly to the arm 80. and guide-members 83 andV 84 for the shiftableshafts 43 and 45 are attached to this member. When the shafts are shifted by a lateral re-adjustment of the handle 53, also the member 82 is rel-adjusted, without, however, acting on'the arm 80. If the shafts 43 and 45 are moved, however, in the same .direction by longitudinal shifting of the shaft 52, the member 82 is not only arm 80 in the direction to the wall 28 where-J 4by the cog-wheel 7-8 is shifted on its shaft.

In order to Show which calculating pos- Sibilities the improved machine oers, the following example is given:

First a plurality of sub-totals shall be' formed and then the final total thereof asknob 2O is turned to the left, and the handle 53 is turned to the right. Y

`As example the following calculation may be assumed:

39.15=585 +45.8 =360 =15v69. .+52.12=624 ,I The multiplication 39.15 is effected in known manner and the product 585 appears in the up er counting mechanism, as well as inthe owe'r one. Now the upper count- 105 rotated, butl also shifted, and moves the I 1 `re-set and t counting mechanism.

' indica ntomas ing mechanism is set to zero means of Y the righthand handle 67. In the sub-total i upper counting mechanism appears the product 360, whereas in the lower one the sum of the two products, or sub-totals respectively,

becomes visible, viz, the sum of 5854-360.

Now the upper counting mechanism is again 1 total Y 4 It may occur -tiacted `fromvthe iinal total.

e next multiplication is effected, i.e. 52.12. The-,product 624 a pears in the upper counting mechanism an at the same time the final total of the three sub-totals 585+360+624=1569 appears in the@ lower A 'In the sub-total countin mechanism 71 three sub-totals are tesi afterl also the last 4Sub-total in the upper counting mechanism has been eaced by re-setting t e latter to zero.

By eacing the results in the first counting mechanism' further results titan be formed therein and read olf it, and n the second counting mechanism the nal sum, or iinal tivel is ascertained.

. T carry through a calculation of this kind' nothing else is necessa 53 t0 the K Supposin the sub-total of 43.13Y is to'be subtracted om the final total 1569. One forms again in the lp'per, counting mechanism the product 559; 1n the lower counting mechanism. this roduct is subtracted already while it is one so that there appears in the` upper counting mechanism the sub-total 559 and in the lower count' mechanism the result 1010.

In onder able to ascertain from how many sub-totals the number .in the second counting mechanism is composed, the subtotal) countingimechanism 71 which is located at the side of the second indicating mechanism is provided. Atevery re-setting of the first counting mechanism to zero, the digit ap ring in the'mechanism 71 isi increased y 1.

When performing 4comparatively long calculations of the kind stated, it may happen that during that time any simple calculation which is entirely independent of that just being carried through 1s to be made, that is to say, a calculation for which any simple calcu ating machine x would do. Now, performingsuch a calculation is possible in the present improved machine without impairing the complicated other calculation just being effected. Nothing else is necessary to that purpose but to shift rearwards the shaft 52 whereby the second indicating mechanism is thrown out of gear. Now calculations can be eected without'lany inlluence upon the number adjusted in the second'indicating mechanism, and re-settings' to lzero placein the first indicating at a sub-total must be'subthan to re-adjust `the handle i ng formed inthe upperl mechanism 71 not marked inthe subtotal coun j mechanism 71. 'Y

'-It:is', there ore, possible to perform additions and multiphcations in the up er counting mechanism, as well as in the fewer one, but it is also ssible to perform an addition or a multiplication in the upper counting mechanism, and at the same time a subtraction or a division r,in the lower one.

Furthermore, it is possible to perform a suber r in theo traction .or a divislon in the u lower counting mechanism. inally, it7 is possible to perform a subtraction or a divi sion in the up r mechanism and at the same'time an addition ora multiplication in the lower one. Any of the two mechanisms may be 'thrown out of gear, the 'other remaming o rative. Owing to all these possibilities a l imaginable combinations of calculations can be performed by means of this improved machine, without separate intermediate calculations, as in other calculating machines.

In order to` cause lthe appearance of sthe correct numbers in the counting mechanism also when negative calculations arel being made, the direction of rotation of the d` itydisks 61 of the respective counting mec a- 'mechanism counter to the normal direction.

This ise'ected merely b shifting the handlel from the left to t e right.

In, Figures 5,l 6 and 7 is shown how the motion of the second indicating mechanism can be reversed and how it can be thrown entirely out of action. v r

The cog-wheels 37 and 42 are arranged in dierent planes, there being between the appel-taining wheels gaps amounting each.to the thickness of one such wheel. It has already been mentioned that the thickness of the cog-wheels 44 and 46 is'w double that of the wheels 37 and. 42. When the handle 56 is vreadjusted to the right, also the wheels 46 are shifted to the right, whereas the wheels-44 are shifted to the-left (Fig. 5). The position of the wheels 44 -is then such that they are located in the plane of the wheels 37, as well as in the plane) of the wheels 42, whereas the wheels .46 are meshing for about `one half with the-wheels 44,

shaft 45 to the left (-Fig. 6). The cog-Wheels 44 t out of the path of the cog-wheels 42,. ut remain meshing with'the cog-wheels 37 and .46. The transfer from the adjust- 4" ing-'gear takes iplace now by and over the cog-wheels 37, 44, 46 and 42 to the cogwheel 40 which is connected with the digitdisk 39. f The train of wheels is noW 4greater by one, so that the direction of rotation of the digit-disks is the reverse of the former rotation. z

, When the shaft 52-is pressed rearwards, the oblique guides 56 shift outwards the shaft 43., as well as the shaft 45. The cogwheel 44 and the cog-wheel 46 get out of the path of the cog wheel 42, and the connection of the cog-wheel 37 (which is under the influence of the adjusting mechanism) with the cog-wheel 42 Y (Fig. 7) is interru ted. l

d y the shifting of the two shafts outwards also the arm 80 has been moved in such a way as to shift laterally thecog-wheel 78 and\to move it out of the path of the Atooth 69 so that when the member by which re- ,setting to zero is effected the sub-total counting mechanism 71 vcannot be actuated. As

Vthe intermediate wheel 74 is broader than the cog-wheel 78 and than that cog-wheel which is connecteldwith the indicating disk,l

these cog-wheels remain in gear with each other.

, counting mechanism.

If the knob 58 is lifted the shaft/52 is thrown forward by-the spring 54 so that againy ad'vustment to the ri ht or to the' left,

as alrea described, lcan effected. The lever 80 '1s moved back into*l its former position and moves the cog-wheel'78 into the path of the tooth 69 so that now eve zeropositionis again-registered in the su total It `is obvious that the arrangement `and 'combination'of parts characterizing the invention'can be combined also with suitableI other calculating machines, for instance Thomas machines. j

I claim: 1 1. A calculating machine, comprising, in

the

combination, two counting` mechanlsms, of

which either is adapted tooperate independent from the other; "an-(adjusting mechamsm common for Dboth said counting mechanisms; a reversing gear Vforming an intermediary motion-transmitting means between one of the counting-mechanisms and said adjusting mechanism; at rotary guide-member forming the means,'by the rotation of which said reversinglgear is reversed, the

' arrangement being such that the shafts of the cog-wheels located between the cogwheels' driven by! the said adjusting mechanism and the 'cog-wheels vmeshing with the wheels of the counting-mechanisms are ladapted to be shifted in opposite directions,

substantially and for the purpose as de scribed.

2. A calculating machine, comprising, in combination, two counting mechanisms, of which either is adapted to operate independent of the other; an adjusting mechanism common to both said counting mechanisms;

a reversing gear forming the means-'for transmitting motion from said adjustingmechanism to one of the counting'mechanisms; a rotary, as well as'axially'shiftable guide-member forming the means, by the' rotation of which said reversing gear is reversed, the arrangement being such that by ,theI rotation of said guide-member thejshafts of the cog-wheels located between the cogwheels driven by the said adjusting mechanism and the cog-wheels meshing with the adapted to be shifted in opposite directions,

and that bythe shifting' of the said guide- `wheels of the counting mechanisms are Sog member the shafts mentioned arejshifted equal distances, substantially and for --the purpose as described.

3. A calculating machine, comprising, in

combination, two counting mechanisms, ofl u j which eitheris adaptedto operate independent of the other; an adjusting mechanism.-

common tov both said counting mechanisms;

a reversing gear forming an intermediary motion-transmitting means between one of j thej counting mechanisms and said adjusting' rotation of saidguide-member the sha s of the cog-wheels located between the colgwheels' driven by the said ad'usting mec anismvand the cog-wheels mes ing with the wheels of the counting mechanism are and that by the shifting of the said guidemember the shafts mentioned are shifted equal distances, the said wedge-shaped memberthen so as to c purpose set forth.

In testimony1 whereof I aix my signature.

ERNST SCHUSTER.

getting in front of the said lug eck it, substantially and for the A adapted to be shifted in opposite directions, l 

